Severing by tearing or breaking – Methods – With preliminary weakening
Patent
1981-10-28
1984-05-29
Yost, Frank T.
Severing by tearing or breaking
Methods
With preliminary weakening
225 965, 225101, C03B 3716, B26F 300
Patent
active
044509952
ABSTRACT:
A scribing machine and method in which the fiber end projecting from a connector or other fiber holder is scribed and severed with a smooth, flat face having a mirror surface at a perpendicular angle to the fiber axis and at the precise length desired for the selected end use. The machine imparts a first preselected level of tension to the fiber during the scribing operation and a second preselected level of tension during the severing operation. The first level is below the tension needed to propagate a crack across the body of the fiber and the second level is above that level. The scribing operation is effected by a tool which is effective to score the surface of the fiber to generate a flaw during the scribing operation, and is withdrawn from engagement with the fiber during the severing operation so that the fiber is suspended without interference as the crack propagates from the flaw across its body.
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patent: 4074840 (1978-02-01), Fulenwider et al.
patent: 4154385 (1979-05-01), Lewis
patent: 4229876 (1980-10-01), Doty
patent: 4274572 (1981-06-01), Dunn et al.
"FIBERS-Simple Testing Methods Give Users a Feel For Cable Parameters", R. B. Chesler et al.; Electronics Aug. 5, 1976 pp. 90-92.
"Fiber-Break Testing by Interferometry: A Comparison of Two Breaking Methods" K. S. Gordon et al.; Applied Optics/ vol. 16, No. 4, pp. 818-819; Apr. 1977.
"A Military Six Fiber Hermaphroditic Connector", J. G. Woods et al.; Proceedings FOC 80 San Francisco pp. 257-261; Sep. 16-18, 1980.
Hodge Malcolm H.
Larkin Joseph F.
Leiby John J.
Cohen Lawrence S.
Nyhagen Donald R.
TRW Inc.
Yost Frank T.
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